Advertisements
Advertisements
प्रश्न
Write the first three terms in each of the sequences defined by the following
an = 3n + 2
Write the first five terms of the following sequences whose nth term are
an = 3n + 2
उत्तर
Given sequence an = 3n + 2
To write first five terms of given sequence put n = 1, 2, 3, 4, 5, we get
a1 = (3 × 1) + 2 = 3 + 2 = 5
a2 = (3 × 2) + 2 = 6 + 2 = 8
a3 = (3 × 3) + 2 = 9 + 2 = 11
a4 = (3 × 4) + 2 = 12 + 2 = 14
a5 = (3 × 5) + 2 = 15 + 2 = 17
∴ The required first five terms of given sequence an = 3n + 2 are 5, 8, 11, 14, 17
APPEARS IN
संबंधित प्रश्न
Determine the 10th term from the end of the A.P. 4, 9, 14, …….., 254
If the nth term of an AP is (2n + 1) then find the sum of its first three terms
In the following situation, involved make an arithmetic progression? and why?
The cost of digging a well after every metre of digging, when it costs Rs 150 for the first metre and rises by Rs 50 for each subsequent metre.
Following are APs or not? If they form an A.P. find the common difference d and write three more terms:
-10, -6, -2, 2 …
Show that the sequence defined by an = 3n2 − 5 is not an A.P
Which term of the A.P. 3, 10, 17, ... will be 84 more than its 13th term?
There is an auditorium with 27 rows of seats. There are 20 seats in the first row, 22 seats in the second row, 24 seats in the third row and so on. Find the number of seats in the 15th row and also find how many total seats are there in the auditorium?
Find the first term and common difference of the Arithmetic Progressions whose nth term is given below
tn = – 3 + 2n
Which of the following form an AP? Justify your answer.
`1/2, 1/3, 1/4, ...`
Determine k so that k2 + 4k + 8, 2k2 + 3k + 6, 3k2 + 4k + 4 are three consecutive terms of an AP.
